Battery charger



FIG. 1 is a front perspective view of a battery charger which embodiesmy new and original design therefore;

FIG. 2 is a front elevation view of thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

The ornamental design for a “battery charger,” as shown and described. 